Chair arm



FIG. 1 is a perspective view of a chair arm showing my new design, wherein the broken line portion is for illustrative purpose only and forms no part of the claimed design.

FIG. 2 is a perspective view of the chair arm;

FIG. 3 is a front elevational view of the chair arm;

FIG. 4 is a rear elevational view of the chair arm;

FIG. 5 is a left side view of the chair arm;

FIG. 6 is a right side view of the chair arm;

FIG. 7 is a top plan view of the chair arm; and,

FIG. 8 is a bottom plan view of the chair arm. 

The ornamental design for a chair arm, as shown and described. 